2a-4=-12

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Solution for 2a-4=-12 equation: 


a in (-oo:+oo)

2*a-4 = -12 // + 12

2*a-4+12 = 0

2*a+8 = 0 // - 8

2*a = -8 // : 2

a = -8/2

a = -4

a = -4

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